## Monday, November 28, 2011

## Saturday, November 26, 2011

### Fraction

**Let's break the hexagon into 6 equal pieces:**

**What if we just had one of the pieces?**

**That would be 1 piece out of 6 pieces. Right?**

**Here's how we write it:**

**We read this like "one sixth."**

Let's do some more counting!

Let's do some more counting!

**.....**

**How much of this hexagon is red?**

**5 pieces are red... out of 6 total pieces...**

**So, of the hexagon is red.**

**How much is blue?**

**1 blue piece... out of 6...**

**of the hexagon is blue.**

## Friday, November 25, 2011

## Thursday, November 17, 2011

## Saturday, November 12, 2011

### Division

**Let's see what's really going on when we divide one number into another number.**

**We start with 6 triangles:**

**We want to see how many chunks of 3 we can make out of 6 things!**

**We can divide 6 things into 2 chunks of 3.**

**Now, let's see how many times 2 will go into 6.**

**Start with 6 squares:**

**We want to see how many chunks of 2 we can make out of 6 things!**

**We can divide 6 things into 3 chunks of 2.**

### Multiplication

**Let's see what's really going on when we multiply two numbers.**

**This means that you have two groups of 3!**

**Put the two groups together... How many triangles do you have?**

**Count them... One, two, three, four, five, six!**

**So, our answer is:**

**Let's do another one! This one has the numbers switched around.**

**This means that you have three groups of 2!**

**Put the three groups together... How many squares do you have?**

**Count them... One, two, three, four, five, six!**

**So, our answer is:**

**Hey, that's the same answer we got with 2 x 3! But, we put the six together a different way. Look at them both again to see the difference!**

### Subtraction (Two Digit Value)

**For this lesson, we'll be working with easy numbers just to get you used to how this stuff works.**

**We're going to work with everything stacked because this is what you'll always do with bigger numbers.**

**We're going to work backwards, just like we did with addition!**

**I'm going to have you subtract the ones first... then the tens. Like addition, you'll have to do it this way when the numbers get harder.**

**Let's jump in!**

**Stack them and line everything up:**

**Subtract down the stripes... Do the ones first, then the tens:**

Subscribe to:
Posts (Atom)